@article{DE_1975_11_9_a6,
     author = {V. A. Mikhailets},
     title = {Boundary value problems for the operator {Sturm--Liouville} equation with a complete system of eigen- and associated functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1595--1600},
     publisher = {mathdoc},
     volume = {11},
     number = {9},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_9_a6/}
}